GB 51131-2016 Technical code for gas-fired combined cooling, heating and power engineering
1 General provisions
1.0.1 This code is developed in order to improve the gas energy utilization efficiency, establish a safe gas-fired combined cooling, heating and power system, and standardize the design, construction, acceptance and operation management of gas-fired combined cooling, heating and power engineering.
1.0.2 This code is applicable to the design, construction, acceptance and operation management of gas-fired combined cooling, heating and power engineering which uses gas as primary energy and directly supplies cold, heat and electric energy to users through a simple cycle with a single generator capacity less than or equal to 25 MW.
1.0.3 Gas-fired combined cooling, heating and power system shall follow the principle of self-use of electric energy and maximization of exhaust heat utilization, and the equipment configuration and operation mode of the system shall be determined after technical and economic comparison.
1.0.4 The annual average energy utilization rate of gas-fired combined cooling, heating and power system shall be greater than 70%.
1.0.5 The design, construction, acceptance, and operation management of gas-fired combined cooling, heating and power engineering shall comply with both this code and the current relevant national standards.
2 Terms
2.0.1 gas-fired combined cooling, heating and power system
a distribution energy supply system, referred to as "combined system", which is arranged near users, uses gas as primary energy to generate electricity, uses exhaust heat of power generation to cool and heat, and outputs electric energy and heat (cold) to users at the same time
2.0.2 energy utilization rate
percentage of the sum of the output electricity amount and heat (cold) amount of the combined system and the input heat of the consumed gas
2.0.3 exhaust heat utilization rate
percentage of heat used for heating and cooling and available heat in exhaust heat of power generation
2.0.4 energy saving rate
the percentage of energy consumption reduced by combined system compared with the conventional energy supply mode when the same amount of electricity, heat (cold) is supplied
2.0.5 operating in isolated mode
separate operation mode of generator sets in combined system
2.0.6 operating in grid parallel mode
the mode in which the generator set of combined system operates side by side with the public grid at the user end, and does not transmit electric energy to the public grid
2.0.7 operating in grid connected mode
the mode in which the generator set of combined system operates in parallel with the public grid at the user end and transmits electric energy to the public grid
2.0.8 energy station
area or place where gas-fired combined cooling, heating and power system equipment and related ancillary facilities are set up
2.0.9 generator set
power generation equipment composed of prime mover, generator, startup device and control device
2.0.10 exhaust heat
heat of cooling water and smoke exhaust of prime mover
2.0.11 exhaust heat boiler
device that uses the smoke exhaust heat energy of prime mover to generate steam or hot water
2.0.12 supplementary-fired exhaust heat boiler
exhaust heat boiler with burner
2.0.13 exhaust heat absorption water chiller (heater)
set that directly uses the exhaust heat of prime mover for cooling and heating. It can be classified into flue gas type and flue gas hot water type chiller (heater).
2.0.14 supplementary-fired exhaust heat absorption chiller (heater)
exhaust heat absorption water chiller (heater) which can be chilled and heated by direct combustion of gas by burner except utilization of exhaust heat
2.0.15 combustion equipment room
room in a energy station where gas combustion equipment is arranged
2.0.16 point of common coupling (PCC)
bus or output integration point at which the combined system outputs electric energy and is connected into public grid
3 Location selection
3.0.1 The location of combined engineering should be close to the hot (cold) load center, the main distribution room and the power load center in the power supply area.
3.0.2 The fire separation distance of the energy station shall comply with the current national standard - GB 50016 Code for fire protection design of buildings. The combustion equipment room shall be Class D plant, and the gas pressurization room and pressure regulating room shall be Class A plant.
3.0.3 Energy station should be set separately or arranged outdoors. When the energy station is not set separately, it can be arranged adjacent to civil buildings, but it shall be separated by firewalls and shall not be close to crowded places.
3.0.4 When the combustion equipment room needs to be arranged in civil buildings due to conditions, it shall be arranged on the first floor or roof of the building, and may also be arranged in the basement of the building.
3.0.5 When gas with relative density (ratio to air density) not less than 0.75 is used as fuel, the combustion equipment room shall not be arranged underground or semi-underground.
3.0.6 Explosion pressure relief facilities shall be set up in the combustion equipment room, and shall not be arranged on the upper floor, the lower floor of or adjacent to crowded places. Combustion equipment rooms located underground, semi-underground and on the first floor shall be arranged near the external wall.
3.0.7 When the combustion equipment is arranged on the first underground floor or the first floor of the building, the capacity of a single generator shall not be greater than 7 MW; when a single generator is arranged on the roof of a building, the capacity of the single generator shall not be greater than 2 MW, and the building structure shall be checked.
3.0.8 When the combustion equipment is installed on the roof, the distance between the combustion equipment room and the roof safety exit shall not be less than 6.0 m.
3.0.9 The setting of transformer and distribution room of combined engineering shall meet the following requirements:
1 The transformer and distribution room should be close to the generator room and the power load center, and far away from the gas pressure regulating room and metering room;
2 The transformer and distribution room shall be convenient for incoming and outgoing lines and equipment transportation;
3 The transformer and distribution room shall not be set directly below or above the toilet, bathroom and explosion dangerous places;
4 In high-rise or multi-storey buildings, the transformer and distribution room with combustible oil electrical equipment shall be set near the outer wall, and shall not be set directly below, directly above, adjacent to and on both sides of the evacuation exit in crowded places;
5 Outdoor power transformation and distribution facilities shall not be set in places with dust, water mist, corrosive gas and where inflammable and explosive materials are stored.
3.0.10 As for combined engineering, noise sources shall be arranged reasonably, and noise reduction and isolation measures shall be taken, and noise emission shall meet the requirements of surrounding environment.
Foreword i
1 General provisions
2 Terms
3 Location selection
4 System configuration
4.1 General requirements
4.2 Cooling, heating and power loads
4.3 Equipment configuration
5 Gas supply system and equipments
5.1 Gas supply system
5.2 Gas equipments
5.3 Auxiliary facilities
6 Power supply and distribution system and equipments
6.1 Power system
6.2 Power generating equipments
6.3 Main electrical connection
6.4 Electrical auxiliary facilities
6.5 Relay protection, automatic devices and measurement
6.6 Lightning grounding
6.7 Electrical installations in explosive atmospheres
7 Exhaust heat system and equipments
7.1 Exhaust heat system
7.2 Exhaust heat equipments
7.3 Auxiliary facilities
8 Monitoring and control system
8.1 Monitoring
8.2 Control
8.3 Alarm and protection
9 Energy station
9.1 Architecture and structure
9.2 Layout of combustion equipment room and auxiliary equipment room
9.3 Ventilation and smoke exhaust
9.4 Lighting
9.5 Water supply and drainage
10 Fire protection
11 Environmental protection
12 Construction and acceptance
12.1 Construction preparation
12.2 Equipment installation
12.3 Pipeline installation
12.4 Equipment commissioning and trial operation
12.5 Completion acceptance
13 Operation and management
13.1 General requirements
13.2 Operation mode
13.3 Startup, operation and shutdown of the system
13.4 Inspection and repair
Explanation of wording in this code
List of quoted standards
Standard
GB 51131-2016 Technical code for gas-fired combined cooling, heating and power engineering (English Version)
Standard No.
GB 51131-2016
Status
valid
Language
English
File Format
PDF
Word Count
25000 words
Price(USD)
750.0
Implemented on
2017-4-1
Delivery
via email in 1 business day
Detail of GB 51131-2016
Standard No.
GB 51131-2016
English Name
Technical code for gas-fired combined cooling, heating and power engineering
GB 51131-2016 Technical code for gas-fired combined cooling, heating and power engineering
1 General provisions
1.0.1 This code is developed in order to improve the gas energy utilization efficiency, establish a safe gas-fired combined cooling, heating and power system, and standardize the design, construction, acceptance and operation management of gas-fired combined cooling, heating and power engineering.
1.0.2 This code is applicable to the design, construction, acceptance and operation management of gas-fired combined cooling, heating and power engineering which uses gas as primary energy and directly supplies cold, heat and electric energy to users through a simple cycle with a single generator capacity less than or equal to 25 MW.
1.0.3 Gas-fired combined cooling, heating and power system shall follow the principle of self-use of electric energy and maximization of exhaust heat utilization, and the equipment configuration and operation mode of the system shall be determined after technical and economic comparison.
1.0.4 The annual average energy utilization rate of gas-fired combined cooling, heating and power system shall be greater than 70%.
1.0.5 The design, construction, acceptance, and operation management of gas-fired combined cooling, heating and power engineering shall comply with both this code and the current relevant national standards.
2 Terms
2.0.1 gas-fired combined cooling, heating and power system
a distribution energy supply system, referred to as "combined system", which is arranged near users, uses gas as primary energy to generate electricity, uses exhaust heat of power generation to cool and heat, and outputs electric energy and heat (cold) to users at the same time
2.0.2 energy utilization rate
percentage of the sum of the output electricity amount and heat (cold) amount of the combined system and the input heat of the consumed gas
2.0.3 exhaust heat utilization rate
percentage of heat used for heating and cooling and available heat in exhaust heat of power generation
2.0.4 energy saving rate
the percentage of energy consumption reduced by combined system compared with the conventional energy supply mode when the same amount of electricity, heat (cold) is supplied
2.0.5 operating in isolated mode
separate operation mode of generator sets in combined system
2.0.6 operating in grid parallel mode
the mode in which the generator set of combined system operates side by side with the public grid at the user end, and does not transmit electric energy to the public grid
2.0.7 operating in grid connected mode
the mode in which the generator set of combined system operates in parallel with the public grid at the user end and transmits electric energy to the public grid
2.0.8 energy station
area or place where gas-fired combined cooling, heating and power system equipment and related ancillary facilities are set up
2.0.9 generator set
power generation equipment composed of prime mover, generator, startup device and control device
2.0.10 exhaust heat
heat of cooling water and smoke exhaust of prime mover
2.0.11 exhaust heat boiler
device that uses the smoke exhaust heat energy of prime mover to generate steam or hot water
2.0.12 supplementary-fired exhaust heat boiler
exhaust heat boiler with burner
2.0.13 exhaust heat absorption water chiller (heater)
set that directly uses the exhaust heat of prime mover for cooling and heating. It can be classified into flue gas type and flue gas hot water type chiller (heater).
2.0.14 supplementary-fired exhaust heat absorption chiller (heater)
exhaust heat absorption water chiller (heater) which can be chilled and heated by direct combustion of gas by burner except utilization of exhaust heat
2.0.15 combustion equipment room
room in a energy station where gas combustion equipment is arranged
2.0.16 point of common coupling (PCC)
bus or output integration point at which the combined system outputs electric energy and is connected into public grid
3 Location selection
3.0.1 The location of combined engineering should be close to the hot (cold) load center, the main distribution room and the power load center in the power supply area.
3.0.2 The fire separation distance of the energy station shall comply with the current national standard - GB 50016 Code for fire protection design of buildings. The combustion equipment room shall be Class D plant, and the gas pressurization room and pressure regulating room shall be Class A plant.
3.0.3 Energy station should be set separately or arranged outdoors. When the energy station is not set separately, it can be arranged adjacent to civil buildings, but it shall be separated by firewalls and shall not be close to crowded places.
3.0.4 When the combustion equipment room needs to be arranged in civil buildings due to conditions, it shall be arranged on the first floor or roof of the building, and may also be arranged in the basement of the building.
3.0.5 When gas with relative density (ratio to air density) not less than 0.75 is used as fuel, the combustion equipment room shall not be arranged underground or semi-underground.
3.0.6 Explosion pressure relief facilities shall be set up in the combustion equipment room, and shall not be arranged on the upper floor, the lower floor of or adjacent to crowded places. Combustion equipment rooms located underground, semi-underground and on the first floor shall be arranged near the external wall.
3.0.7 When the combustion equipment is arranged on the first underground floor or the first floor of the building, the capacity of a single generator shall not be greater than 7 MW; when a single generator is arranged on the roof of a building, the capacity of the single generator shall not be greater than 2 MW, and the building structure shall be checked.
3.0.8 When the combustion equipment is installed on the roof, the distance between the combustion equipment room and the roof safety exit shall not be less than 6.0 m.
3.0.9 The setting of transformer and distribution room of combined engineering shall meet the following requirements:
1 The transformer and distribution room should be close to the generator room and the power load center, and far away from the gas pressure regulating room and metering room;
2 The transformer and distribution room shall be convenient for incoming and outgoing lines and equipment transportation;
3 The transformer and distribution room shall not be set directly below or above the toilet, bathroom and explosion dangerous places;
4 In high-rise or multi-storey buildings, the transformer and distribution room with combustible oil electrical equipment shall be set near the outer wall, and shall not be set directly below, directly above, adjacent to and on both sides of the evacuation exit in crowded places;
5 Outdoor power transformation and distribution facilities shall not be set in places with dust, water mist, corrosive gas and where inflammable and explosive materials are stored.
3.0.10 As for combined engineering, noise sources shall be arranged reasonably, and noise reduction and isolation measures shall be taken, and noise emission shall meet the requirements of surrounding environment.
Contents of GB 51131-2016
Foreword i
1 General provisions
2 Terms
3 Location selection
4 System configuration
4.1 General requirements
4.2 Cooling, heating and power loads
4.3 Equipment configuration
5 Gas supply system and equipments
5.1 Gas supply system
5.2 Gas equipments
5.3 Auxiliary facilities
6 Power supply and distribution system and equipments
6.1 Power system
6.2 Power generating equipments
6.3 Main electrical connection
6.4 Electrical auxiliary facilities
6.5 Relay protection, automatic devices and measurement
6.6 Lightning grounding
6.7 Electrical installations in explosive atmospheres
7 Exhaust heat system and equipments
7.1 Exhaust heat system
7.2 Exhaust heat equipments
7.3 Auxiliary facilities
8 Monitoring and control system
8.1 Monitoring
8.2 Control
8.3 Alarm and protection
9 Energy station
9.1 Architecture and structure
9.2 Layout of combustion equipment room and auxiliary equipment room
9.3 Ventilation and smoke exhaust
9.4 Lighting
9.5 Water supply and drainage
10 Fire protection
11 Environmental protection
12 Construction and acceptance
12.1 Construction preparation
12.2 Equipment installation
12.3 Pipeline installation
12.4 Equipment commissioning and trial operation
12.5 Completion acceptance
13 Operation and management
13.1 General requirements
13.2 Operation mode
13.3 Startup, operation and shutdown of the system
13.4 Inspection and repair
Explanation of wording in this code
List of quoted standards
